A couple years ago I created a Twitter-related widget in javascript that people could embed on their websites. I did it for fun, just to see what would happen.
Now, the widget is installed on thousands of websites and gets over 5 million pageviews (from over 1 million visitors) per month. It is not monetized at all, and it is just leaking bandwidth from my server. I can't afford to just let this run out of my pocket for much longer.
So, how could I make some money with this? The widget is part of a larger Twitter-related site (which gets a tiny bit of ad revenue), but most of the traffic/cost comes through the widget.
Any ideas would be most welcome. (posted from throwaway account)
Don't price this by the impression. If your advertisers are thinking CPM they'll rapidly start evaluating what this untargeted, run-of-network inventory is worth, which is likely close to zero. You won't get a $1.00 CPM if you price it by the impression. You'll be lucky to get a $0.20 CPM.
Instead, I'd try and sell a few sponsorships, Deck Network style, each sponsorship granting a share of the traffic for at least a month and for at least a four-figure sum each. The audience is looking at a Twitter widget, so your natural audience is Twitter-related businesses. Develop an unobtrusive text-based ad unit, something like the promos for Twitter clients that Twitter itself runs on twitter.com, and then pitch it to every Twitter-related business you can find.
Remember, high prices for a big share of a really relevant audience and do whatever you can to keep them from thinking about the inventory in terms of CPM, because five million ad impressions is not a hell of a lot when rationally priced. You need to do a lot of hand waving and sprinkle a lot of fairy dust ('reaching key influencers', etc.) to sell such a small amount of inventory for a meaningful amount.